diff options
Diffstat (limited to 'src/hw/sh4/r2d.c')
| -rw-r--r-- | src/hw/sh4/r2d.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/src/hw/sh4/r2d.c b/src/hw/sh4/r2d.c new file mode 100644 index 0000000..c1ff9a0 --- /dev/null +++ b/src/hw/sh4/r2d.c @@ -0,0 +1,363 @@ +/* + * Renesas SH7751R R2D-PLUS emulation + * + * Copyright (c) 2007 Magnus Damm + * Copyright (c) 2008 Paul Mundt + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ + +#include "hw/sysbus.h" +#include "hw/hw.h" +#include "hw/sh4/sh.h" +#include "hw/devices.h" +#include "sysemu/sysemu.h" +#include "hw/boards.h" +#include "hw/pci/pci.h" +#include "net/net.h" +#include "sh7750_regs.h" +#include "hw/ide.h" +#include "hw/loader.h" +#include "hw/usb.h" +#include "hw/block/flash.h" +#include "sysemu/block-backend.h" +#include "exec/address-spaces.h" + +#define FLASH_BASE 0x00000000 +#define FLASH_SIZE 0x02000000 + +#define SDRAM_BASE 0x0c000000 /* Physical location of SDRAM: Area 3 */ +#define SDRAM_SIZE 0x04000000 + +#define SM501_VRAM_SIZE 0x800000 + +#define BOOT_PARAMS_OFFSET 0x0010000 +/* CONFIG_BOOT_LINK_OFFSET of Linux kernel */ +#define LINUX_LOAD_OFFSET 0x0800000 +#define INITRD_LOAD_OFFSET 0x1800000 + +#define PA_IRLMSK 0x00 +#define PA_POWOFF 0x30 +#define PA_VERREG 0x32 +#define PA_OUTPORT 0x36 + +typedef struct { + uint16_t bcr; + uint16_t irlmsk; + uint16_t irlmon; + uint16_t cfctl; + uint16_t cfpow; + uint16_t dispctl; + uint16_t sdmpow; + uint16_t rtcce; + uint16_t pcicd; + uint16_t voyagerrts; + uint16_t cfrst; + uint16_t admrts; + uint16_t extrst; + uint16_t cfcdintclr; + uint16_t keyctlclr; + uint16_t pad0; + uint16_t pad1; + uint16_t verreg; + uint16_t inport; + uint16_t outport; + uint16_t bverreg; + +/* output pin */ + qemu_irq irl; + MemoryRegion iomem; +} r2d_fpga_t; + +enum r2d_fpga_irq { + PCI_INTD, CF_IDE, CF_CD, PCI_INTC, SM501, KEY, RTC_A, RTC_T, + SDCARD, PCI_INTA, PCI_INTB, EXT, TP, + NR_IRQS +}; + +static const struct { short irl; uint16_t msk; } irqtab[NR_IRQS] = { + [CF_IDE] = { 1, 1<<9 }, + [CF_CD] = { 2, 1<<8 }, + [PCI_INTA] = { 9, 1<<14 }, + [PCI_INTB] = { 10, 1<<13 }, + [PCI_INTC] = { 3, 1<<12 }, + [PCI_INTD] = { 0, 1<<11 }, + [SM501] = { 4, 1<<10 }, + [KEY] = { 5, 1<<6 }, + [RTC_A] = { 6, 1<<5 }, + [RTC_T] = { 7, 1<<4 }, + [SDCARD] = { 8, 1<<7 }, + [EXT] = { 11, 1<<0 }, + [TP] = { 12, 1<<15 }, +}; + +static void update_irl(r2d_fpga_t *fpga) +{ + int i, irl = 15; + for (i = 0; i < NR_IRQS; i++) + if (fpga->irlmon & fpga->irlmsk & irqtab[i].msk) + if (irqtab[i].irl < irl) + irl = irqtab[i].irl; + qemu_set_irq(fpga->irl, irl ^ 15); +} + +static void r2d_fpga_irq_set(void *opaque, int n, int level) +{ + r2d_fpga_t *fpga = opaque; + if (level) + fpga->irlmon |= irqtab[n].msk; + else + fpga->irlmon &= ~irqtab[n].msk; + update_irl(fpga); +} + +static uint64_t r2d_fpga_read(void *opaque, hwaddr addr, unsigned int size) +{ + r2d_fpga_t *s = opaque; + + switch (addr) { + case PA_IRLMSK: + return s->irlmsk; + case PA_OUTPORT: + return s->outport; + case PA_POWOFF: + return 0x00; + case PA_VERREG: + return 0x10; + } + + return 0; +} + +static void +r2d_fpga_write(void *opaque, hwaddr addr, uint64_t value, unsigned int size) +{ + r2d_fpga_t *s = opaque; + + switch (addr) { + case PA_IRLMSK: + s->irlmsk = value; + update_irl(s); + break; + case PA_OUTPORT: + s->outport = value; + break; + case PA_POWOFF: + if (value & 1) { + qemu_system_shutdown_request(); + } + break; + case PA_VERREG: + /* Discard writes */ + break; + } +} + +static const MemoryRegionOps r2d_fpga_ops = { + .read = r2d_fpga_read, + .write = r2d_fpga_write, + .impl.min_access_size = 2, + .impl.max_access_size = 2, + .endianness = DEVICE_NATIVE_ENDIAN, +}; + +static qemu_irq *r2d_fpga_init(MemoryRegion *sysmem, + hwaddr base, qemu_irq irl) +{ + r2d_fpga_t *s; + + s = g_malloc0(sizeof(r2d_fpga_t)); + + s->irl = irl; + + memory_region_init_io(&s->iomem, NULL, &r2d_fpga_ops, s, "r2d-fpga", 0x40); + memory_region_add_subregion(sysmem, base, &s->iomem); + return qemu_allocate_irqs(r2d_fpga_irq_set, s, NR_IRQS); +} + +typedef struct ResetData { + SuperHCPU *cpu; + uint32_t vector; +} ResetData; + +static void main_cpu_reset(void *opaque) +{ + ResetData *s = (ResetData *)opaque; + CPUSH4State *env = &s->cpu->env; + + cpu_reset(CPU(s->cpu)); + env->pc = s->vector; +} + +static struct QEMU_PACKED +{ + int mount_root_rdonly; + int ramdisk_flags; + int orig_root_dev; + int loader_type; + int initrd_start; + int initrd_size; + + char pad[232]; + + char kernel_cmdline[256]; +} boot_params; + +static void r2d_init(MachineState *machine) +{ + const char *cpu_model = machine->cpu_model; + const char *kernel_filename = machine->kernel_filename; + const char *kernel_cmdline = machine->kernel_cmdline; + const char *initrd_filename = machine->initrd_filename; + SuperHCPU *cpu; + CPUSH4State *env; + ResetData *reset_info; + struct SH7750State *s; + MemoryRegion *sdram = g_new(MemoryRegion, 1); + qemu_irq *irq; + DriveInfo *dinfo; + int i; + DeviceState *dev; + SysBusDevice *busdev; + MemoryRegion *address_space_mem = get_system_memory(); + PCIBus *pci_bus; + + if (cpu_model == NULL) { + cpu_model = "SH7751R"; + } + + cpu = cpu_sh4_init(cpu_model); + if (cpu == NULL) { + fprintf(stderr, "Unable to find CPU definition\n"); + exit(1); + } + env = &cpu->env; + + reset_info = g_malloc0(sizeof(ResetData)); + reset_info->cpu = cpu; + reset_info->vector = env->pc; + qemu_register_reset(main_cpu_reset, reset_info); + + /* Allocate memory space */ + memory_region_init_ram(sdram, NULL, "r2d.sdram", SDRAM_SIZE, &error_fatal); + vmstate_register_ram_global(sdram); + memory_region_add_subregion(address_space_mem, SDRAM_BASE, sdram); + /* Register peripherals */ + s = sh7750_init(cpu, address_space_mem); + irq = r2d_fpga_init(address_space_mem, 0x04000000, sh7750_irl(s)); + + dev = qdev_create(NULL, "sh_pci"); + busdev = SYS_BUS_DEVICE(dev); + qdev_init_nofail(dev); + pci_bus = PCI_BUS(qdev_get_child_bus(dev, "pci")); + sysbus_mmio_map(busdev, 0, P4ADDR(0x1e200000)); + sysbus_mmio_map(busdev, 1, A7ADDR(0x1e200000)); + sysbus_connect_irq(busdev, 0, irq[PCI_INTA]); + sysbus_connect_irq(busdev, 1, irq[PCI_INTB]); + sysbus_connect_irq(busdev, 2, irq[PCI_INTC]); + sysbus_connect_irq(busdev, 3, irq[PCI_INTD]); + + sm501_init(address_space_mem, 0x10000000, SM501_VRAM_SIZE, + irq[SM501], serial_hds[2]); + + /* onboard CF (True IDE mode, Master only). */ + dinfo = drive_get(IF_IDE, 0, 0); + dev = qdev_create(NULL, "mmio-ide"); + busdev = SYS_BUS_DEVICE(dev); + sysbus_connect_irq(busdev, 0, irq[CF_IDE]); + qdev_prop_set_uint32(dev, "shift", 1); + qdev_init_nofail(dev); + sysbus_mmio_map(busdev, 0, 0x14001000); + sysbus_mmio_map(busdev, 1, 0x1400080c); + mmio_ide_init_drives(dev, dinfo, NULL); + + /* onboard flash memory */ + dinfo = drive_get(IF_PFLASH, 0, 0); + pflash_cfi02_register(0x0, NULL, "r2d.flash", FLASH_SIZE, + dinfo ? blk_by_legacy_dinfo(dinfo) : NULL, + (16 * 1024), FLASH_SIZE >> 16, + 1, 4, 0x0000, 0x0000, 0x0000, 0x0000, + 0x555, 0x2aa, 0); + + /* NIC: rtl8139 on-board, and 2 slots. */ + for (i = 0; i < nb_nics; i++) + pci_nic_init_nofail(&nd_table[i], pci_bus, + "rtl8139", i==0 ? "2" : NULL); + + /* USB keyboard */ + usb_create_simple(usb_bus_find(-1), "usb-kbd"); + + /* Todo: register on board registers */ + memset(&boot_params, 0, sizeof(boot_params)); + + if (kernel_filename) { + int kernel_size; + + kernel_size = load_image_targphys(kernel_filename, + SDRAM_BASE + LINUX_LOAD_OFFSET, + INITRD_LOAD_OFFSET - LINUX_LOAD_OFFSET); + if (kernel_size < 0) { + fprintf(stderr, "qemu: could not load kernel '%s'\n", kernel_filename); + exit(1); + } + + /* initialization which should be done by firmware */ + address_space_stl(&address_space_memory, SH7750_BCR1, 1 << 3, + MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 SDRAM */ + address_space_stw(&address_space_memory, SH7750_BCR2, 3 << (3 * 2), + MEMTXATTRS_UNSPECIFIED, NULL); /* cs3 32bit */ + reset_info->vector = (SDRAM_BASE + LINUX_LOAD_OFFSET) | 0xa0000000; /* Start from P2 area */ + } + + if (initrd_filename) { + int initrd_size; + + initrd_size = load_image_targphys(initrd_filename, + SDRAM_BASE + INITRD_LOAD_OFFSET, + SDRAM_SIZE - INITRD_LOAD_OFFSET); + + if (initrd_size < 0) { + fprintf(stderr, "qemu: could not load initrd '%s'\n", initrd_filename); + exit(1); + } + + /* initialization which should be done by firmware */ + boot_params.loader_type = tswap32(1); + boot_params.initrd_start = tswap32(INITRD_LOAD_OFFSET); + boot_params.initrd_size = tswap32(initrd_size); + } + + if (kernel_cmdline) { + /* I see no evidence that this .kernel_cmdline buffer requires + NUL-termination, so using strncpy should be ok. */ + strncpy(boot_params.kernel_cmdline, kernel_cmdline, + sizeof(boot_params.kernel_cmdline)); + } + + rom_add_blob_fixed("boot_params", &boot_params, sizeof(boot_params), + SDRAM_BASE + BOOT_PARAMS_OFFSET); +} + +static void r2d_machine_init(MachineClass *mc) +{ + mc->desc = "r2d-plus board"; + mc->init = r2d_init; +} + +DEFINE_MACHINE("r2d", r2d_machine_init) |
